摘要
风荷载是大跨度空间结构的重要荷载。本文针对某中学综合楼的平板网架屋盖结构进行风致振动效应分析,采用AR方法进行风荷载时程的人工模拟,利用有限元软件对网架结构进行风荷载时程分析,获得结构的风致振动响应。研究表明,该网架结构的风荷载响应功率谱幅值出现在4Hz左右,表明能量多集中于此频率。
Wind load is an important load for long-span spatial structures. In this paper, the wind induced vibration effect of the flat roof structure of a high school comprehensive building was analyzed. The AR method was used to simulate the time history of the wind load. The wind load time history analysis of the structure was carried out by the finite element software, and the wind induced vibration response of the structure was obtained. The study shows that the wind load response power spectrum amplitude of the flat grid structure appears at 4Hz, indicating that the energy concentrates on this frequency.
作者
周雨斌
ZHOU Yubin(Greentown Real Estate Group Co.,Ltd.,Hangzhou 310007,China)
出处
《低温建筑技术》
2018年第10期58-59,共2页
Low Temperature Architecture Technology
关键词
平板网架
脉动风
风致振动
flat grid
roof structure
fluctuating wind
wind-induced vibration
